// SPDX-License-Identifier: GPL-2.0#include <linux/init_task.h>#include <linux/export.h>#include <linux/mqueue.h>#include <linux/sched.h>#include <linux/sched/sysctl.h>#include <linux/sched/rt.h>#include <linux/sched/task.h>#include <linux/init.h>#include <linux/fs.h>#include <linux/mm.h>#include <linux/audit.h>#include <linux/numa.h>#include <asm/pgtable.h>#include <linux/uaccess.h>static struct signal_struct init_signals = {.nr_threads = 1,.thread_head = LIST_HEAD_INIT(init_task.thread_node),.wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(init_signals.wait_chldexit),.shared_pending = {.list = LIST_HEAD_INIT(init_signals.shared_pending.list),.signal = {{0}}},.multiprocess = HLIST_HEAD_INIT,.rlim = INIT_RLIMITS,.cred_guard_mutex = __MUTEX_INITIALIZER(init_signals.cred_guard_mutex),#ifdef CONFIG_POSIX_TIMERS.posix_timers = LIST_HEAD_INIT(init_signals.posix_timers),.cputimer = {.cputime_atomic = INIT_CPUTIME_ATOMIC,.running = false,.checking_timer = false,},#endifINIT_CPU_TIMERS(init_signals).pids = {[PIDTYPE_PID] = &init_struct_pid,[PIDTYPE_TGID] = &init_struct_pid,[PIDTYPE_PGID] = &init_struct_pid,[PIDTYPE_SID] = &init_struct_pid,},INIT_PREV_CPUTIME(init_signals)};static struct sighand_struct init_sighand = {.count = REFCOUNT_INIT(1),.action = { { { .sa_handler = SIG_DFL, } }, },.siglock = __SPIN_LOCK_UNLOCKED(init_sighand.siglock),.signalfd_wqh = __WAIT_QUEUE_HEAD_INITIALIZER(init_sighand.signalfd_wqh),};/** Set up the first task table, touch at your own risk!. Base=0,* limit=0x1fffff (=2MB)*/struct task_struct init_task#ifdef CONFIG_ARCH_TASK_STRUCT_ON_STACK__init_task_data#endif= {#ifdef CONFIG_THREAD_INFO_IN_TASK.thread_info = INIT_THREAD_INFO(init_task),.stack_refcount = REFCOUNT_INIT(1),#endif.state = 0,.stack = init_stack,.usage = REFCOUNT_INIT(2),.flags = PF_KTHREAD,.prio = MAX_PRIO - 20,.static_prio = MAX_PRIO - 20,.normal_prio = MAX_PRIO - 20,.policy = SCHED_NORMAL,.cpus_allowed = CPU_MASK_ALL,.nr_cpus_allowed= NR_CPUS,.mm = NULL,.active_mm = &init_mm,.restart_block = {.fn = do_no_restart_syscall,},.se = {.group_node = LIST_HEAD_INIT(init_task.se.group_node),},.rt = {.run_list = LIST_HEAD_INIT(init_task.rt.run_list),.time_slice = RR_TIMESLICE,},.tasks = LIST_HEAD_INIT(init_task.tasks),#ifdef CONFIG_SMP.pushable_tasks = PLIST_NODE_INIT(init_task.pushable_tasks, MAX_PRIO),#endif#ifdef CONFIG_CGROUP_SCHED.sched_task_group = &root_task_group,#endif.ptraced = LIST_HEAD_INIT(init_task.ptraced),.ptrace_entry = LIST_HEAD_INIT(init_task.ptrace_entry),.real_parent = &init_task,.parent = &init_task,.children = LIST_HEAD_INIT(init_task.children),.sibling = LIST_HEAD_INIT(init_task.sibling),.group_leader = &init_task,RCU_POINTER_INITIALIZER(real_cred, &init_cred),RCU_POINTER_INITIALIZER(cred, &init_cred),.comm = INIT_TASK_COMM,.thread = INIT_THREAD,.fs = &init_fs,.files = &init_files,.signal = &init_signals,.sighand = &init_sighand,.nsproxy = &init_nsproxy,.pending = {.list = LIST_HEAD_INIT(init_task.pending.list),.signal = {{0}}},.blocked = {{0}},.alloc_lock = __SPIN_LOCK_UNLOCKED(init_task.alloc_lock),.journal_info = NULL,INIT_CPU_TIMERS(init_task).pi_lock = __RAW_SPIN_LOCK_UNLOCKED(init_task.pi_lock),.timer_slack_ns = 50000, /* 50 usec default slack */.thread_pid = &init_struct_pid,.thread_group = LIST_HEAD_INIT(init_task.thread_group),.thread_node = LIST_HEAD_INIT(init_signals.thread_head),#ifdef CONFIG_AUDIT.loginuid = INVALID_UID,.sessionid = AUDIT_SID_UNSET,#endif#ifdef CONFIG_PERF_EVENTS.perf_event_mutex = __MUTEX_INITIALIZER(init_task.perf_event_mutex),.perf_event_list = LIST_HEAD_INIT(init_task.perf_event_list),#endif#ifdef CONFIG_PREEMPT_RCU.rcu_read_lock_nesting = 0,.rcu_read_unlock_special.s = 0,.rcu_node_entry = LIST_HEAD_INIT(init_task.rcu_node_entry),.rcu_blocked_node = NULL,#endif#ifdef CONFIG_TASKS_RCU.rcu_tasks_holdout = false,.rcu_tasks_holdout_list = LIST_HEAD_INIT(init_task.rcu_tasks_holdout_list),.rcu_tasks_idle_cpu = -1,#endif#ifdef CONFIG_CPUSETS.mems_allowed_seq = SEQCNT_ZERO(init_task.mems_allowed_seq),#endif#ifdef CONFIG_RT_MUTEXES.pi_waiters = RB_ROOT_CACHED,.pi_top_task = NULL,#endifINIT_PREV_CPUTIME(init_task)#ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN.vtime.seqcount = SEQCNT_ZERO(init_task.vtime_seqcount),.vtime.starttime = 0,.vtime.state = VTIME_SYS,#endif#ifdef CONFIG_NUMA_BALANCING.numa_preferred_nid = NUMA_NO_NODE,.numa_group = NULL,.numa_faults = NULL,#endif#ifdef CONFIG_KASAN.kasan_depth = 1,#endif#ifdef CONFIG_TRACE_IRQFLAGS.softirqs_enabled = 1,#endif#ifdef CONFIG_LOCKDEP.lockdep_recursion = 0,#endif#ifdef CONFIG_FUNCTION_GRAPH_TRACER.ret_stack = NULL,#endif#if defined(CONFIG_TRACING) && defined(CONFIG_PREEMPT).trace_recursion = 0,#endif#ifdef CONFIG_LIVEPATCH.patch_state = KLP_UNDEFINED,#endif#ifdef CONFIG_SECURITY.security = NULL,#endif};EXPORT_SYMBOL(init_task);/** Initial thread structure. Alignment of this is handled by a special* linker map entry.*/#ifndef CONFIG_THREAD_INFO_IN_TASKstruct thread_info init_thread_info __init_thread_info = INIT_THREAD_INFO(init_task);#endif
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